Welcome to Westonci.ca, where you can find answers to all your questions from a community of experienced professionals. Discover the answers you need from a community of experts ready to help you with their knowledge and experience in various fields. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

How do scientists know that galaxies change over time?

Sagot :

They know from years and years of studying the galaxies... and watching their every move

Hope I helpe ^-^